DICRANUM. Ill 



allied species of this Section, rather rigid, glossy, slightly twisted 

 and appressed when dry, patent and subsecund when moist, from 

 an oblong base gradually linear-lanceolate, broader than in any of 

 the following species in the upper half, quite entire or with only 

 a few very obscure denticulations at the apex ; nerve \-\ width 

 of base, thick, shortly excurrent, smooth above, areolation at angles 

 large, orange brown, forming distinct auricles ; above these, 

 almost from the base, the cells are very small, narrow-linear or 

 rhomboid, 2-4 times as long as broad, quickly becoming shorter, 

 elliptic-rhomboid ; in the upper part as wide as long, rounded, 

 quadrate, or irregular, very small ; all golden yellow or pellucid, 

 with rather thick walls, smooth at back. Capsule sub-cylindric, 

 erect, straight or slightly curved, subplicate when dry. Peristome 

 teeth short, only slightly cleft at apex, fragile. 



Hab. Rocks in subalpine regions ; not common. Fruit rare, late summer. 



A fine species, larger than its allies, with stouter dense-leaved stems ; closely 

 resembling D. fuscescens, but with entire leaves, and with the basal areolation usually 

 shorter, the cell- walls not porose, the upper cells not papillose ; the leaves are also 

 shorter in the subula, more densely crowded and less flexuose when dry. It is very 

 near D. fulvum, a continental species, which however has denticulate leaves and still 

 shorter, chlorophyllose cells. 



14. Dicranum elongatum Schleich. (Tab. XVIII. G.). 



In very compact neat tufts, densely tomentose , yellowish 

 green, 3-6 inches high. Stems straight, with the leaves erect and 

 appressed when dry, the upper very little twisted ; erecto-patent 

 or slightly secund when moist, straight, rather small and short ; 

 from an oblong-lanceolate base linear-subulate, ending in a very- 

 narrow, acute, but not very elongate or flexuose point, canaliculate 

 above, entire or very faintly toothed at apex ; nerve narrow and 

 rather ill-defined below, excurrent ; angular cells large, orange, 

 forming distinct auricles ; basal cells linear, incrassate, with the 

 cell-walls porose, above shorter, elliptic, in the upper part of the 

 leaf minute, oval. Capsule small, greenish brown, subcernuous, 

 ovate and gibbous, rarely shortly oval, erect and symmetrical (var. 

 orthocarpum CM.) ; peristome teeth irregular. 



Hab. Mountains ; rocks and wet places, very rare. Scotch Alps. Cheviots. 

 Fr. late summer. 



Easily known by its yellowish green very dense tufts with straight, slender stems 

 interwoven with reddish tomentum. In the leaf it is almost a miniature of D. 

 fuscescens, but is known from the ordinary form by the smaller almost entire leaves. 

 Several allied species have been described on the Continent and in N. America. 



